Has the blanket become impure by touching a spot of urine on a garment, or by the hand touching the impure spot and then the blanket, while unaware of the transfer of impurity? And how is it to be purified if the exact spot of impurity is not known? And is it obligatory to purify it despite the hardship and the presence of waswasa (whispers of Satan/obsessive doubts)?
The cure for obsessive doubts (waswasah) is to ignore them and pay no attention to them. Impurity is not transferred merely by doubt; the default is that it is not transferred unless there is firm certainty of its transfer. Therefore, the blanket in question does not need to be purified as long as the matter is merely a doubt.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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